Boat for stern fishing without a ramp with two decks

ABSTRACT

The subject of the present invention consists of a boat for fishing from the stern, without a ramp, with two decks, which represents something completely new and different in fishing boats for stern fishing as they are now known and used, and which, in spite of being of small tonnage, has the advantages of a large refrigerator ships.

[ Mar. 19, 1974 BOAT FOR STERN FISHING WITHOUT A RAMP WITH TWO DECKSFOREIGN PATENTS OR APPLICATIONS 1,055.986 1/1956Germany.1.............i...... ll4/O.5 A

[76] inventor: Javier Rey Mermudez, Avda-Primo 686,729 1,103,790

Italy............ Germany de Rineo, 1-13", La Coruna, Spain Aug. 16,1972 Primary Examiner-Trygve M. Blix [22] Filed:

[21] Appl. No.: 281,208 Assistant Examiner-Stuart M. Goldstein Attorney,Agent, or Firm-Ralph Hohenfeldt; Fred Wiviott [30] Foreign ApplicationPriority Data Nov. 26, i971 [57] ABSTRACT The subject of the presentinvention consists of a boat Spain 397399 1l4/0.5 A B 3 35/00 forfishing from the stern, without a ramp, with two [14/05 A, 43.5 65, 61decks, which represents something completely new and different infishing boats for stem fishing as they are now known and used, andwhich, in

[52] US. [51] int. [58] Field of Search spite of being the advantages ofa large refrigerator ship. I

of small tonnage, has

S T N m n 9, E m e me e D E H N U N 15 3.070.916 1/1963 114/05 A 2 579787 12/1951 Burnev 114 05 A 11 Claims, 5 Drawing Figures PATENTED IIAR l9 I974 SHEET 2 BF 3 BOAT FOR STERN FISHING WITHOUT A RAMP WITH TWO DECKSThe purpose of this application for a Patent of Invention is to describea boat for fishing from the stern, without a ramp, with two decks, whichrepresents something completely new and different in fishing boats forstem fishing as they are now known and used, and which, in spite ofbeing of small tonnage, has the advantages of large refrigerator ships.

Boats for stern fishing with ramps have been demonstrated to haveserious drawbacks. One of these is the significant loss of ship capacitydue to the spaced required for the ramp which, however small the boatmay be, will take at least five metres from the length of the ship. Inaddition, there is serious danger to the crew from the ramp, since inbad weather waves enter through the open ramp and sweep over the deckand, even in the case of large refrigerator ships, may reach the bridge,a distance of some sixty metres. Therefore, if in a ship of this type inwhich the freeboard deck is very large, the water enters all the way tothe bridge, the existence of such ramps in small boats would make workimpossible as the ramp would allow flooding of the deck and some or tonsof water would be loaded onto the surface of the ramp, a quantity withwhich the stern would be submerged and displacement would be lost.

Another drawback is that the winches for hoisting the fishing gear arelocated aft of the bridge, even though the bridge goes toward the bow.Therefore, in a small boat, the amount of gear that can be taken up isvery small, and it is necessary to repeat the hoisting operation aconsiderable number of times before the fishing gear is hauled incompletely.

Another drawback is that the sides of the boat are normally completelytaken up by life boats. Thus, if it is necessary to run a cable from bowto stem or viceversa, it must be done by raising the cable above theboats, with the consequent danger. In boats for stern fishing, whenthere is a snag (when the fishing gear fouls on the bottom of the sea),all of the operation of disentangling it must be conducted from thestern of the boat with the risk of the cables becoming entangled in thepropeller blades.

It will be noted also that in traditional boats, when the fishing gearis being hoisted in, when the doors reach the stern, a few metres beforecoming to the davits, it is necessary to give warning of this fact withthe release bar, striking three times on the gunwale to advise theperson controlling the winches in order that he may reduce their speed,inasmuch as this operator cannot see directly what is going on. If thespeed of the winches is not reduced, the arrival of the doors of the netat a point where they butt against the davit can break the cable andcause accidents, or even the loss of the entire fishing gear since thedoors may fall into the sea if the net section of the other arm of thegear does not hold, and the entire gear may be lost.

All of these problems are resolved in the boat to which this applicationhas reference, as the result of a series of maximum improvementsintroduced in the boat.

For example, for the throwing out and hauling in of the fishing gear bythe stern, a ramp has been dispensed with and a revolving roller hasbeen provided which simplifies the operation completely and with which,at

the same time, extra metres of space are gained for the capacity of theboat.

In addition to this, the winches have been located forward, below themain deck, the operation of hauling in the fishing gear being conductedthrough a tunnel which is formed beneath the command bridge, so that,for example, in a boat with a keel length of 29 metres, it is possibleto take in 25 metres of fishing gear at a time; that is to say, it ispossible to haul in at one time as many metres of tackle as is permittedby the length of the boat from the roller at the stern to the forwardmast, which is where the rollers are located by which the cables enterthe winches, with the advantage that these are under cover, the sailorbeing completely protected from the surging sea and inclement weather.

It is current practice in vessels to have the sides of the boat occupiedby the davits for the life boats. With this situation, when it isnecessary to run a cable from one end of the boat to the other, whetherduring fishing operations or in mooring, it is necessary to performdangerous manoeuvers on top of the davits. In the boat which is thesubject of this invention, provision has been made to keep the sides ofthe boat free of obstructions, thus obtaining a greater simplicity inthe operations to be carried out, including those of disentangling thefishing gear from the bottom when it is snagged, by carrying one of thecables forward] to the bow through some of the rollers. After this step,the boat may carry out the work of disentangling the gear from the bow,eliminating the danger of the cable becoming caught in the propeller.This isan advantage which the boats with ramps for stern fishing do nothave, and cannot have, but which can be achieved in boats of traditionaldesign.

Still another advantage of this type of boat is that the person who isin charge of hauling in the fishing gear with the winches sees theoperation directly, whether it is hauled in by the lower deck or theupper deck, and even when it is necessary to loop the gear to thetwolegged mast aft. With this, when the gear reaches the end of themast, the winches will stop without any need for a delay in order to beso advised.

All these improvements can be carried out in vessels of any kind, eventhough they may be of very small tonnage.

A clearer and more concrete idea of the boat which is the subject ofthis application is given in the attached sheets of drawings in which:

FIG. 1 is a side view of the boat.

FIG. 2 is an overhead plan view of the bridge.

FIG. 3 is an overhead plan view of the upper deck, where the fishinggear is put through the tunnel which is located under the bridge.

FIG. 4 is an overhead plan view of the freeboard or main deck.

And FIG. 5 is a view of the hatches.

This invention relates to a boat for stern fishing, without a ramp,which has a double deck and a double bridge, the lower bridge formingatunnel which can be kept open or closed at will and through which thepart of the stern where the operations of hoisting in the fishing tacklemay be seen from the bow.

Referring first to FIG. 1, it can be seen that the boat includes a mainor lower deck 1 and an upper deck 2, the first bridge or command bridge3 and the lower bridge or working bridge 4.

In the same Figure, the placement of the fishing winches 5 may also beobserved, located completely forward and oriented as shown in FIG. 4below the upper deck, and the roller 6 located fully aft, on the side,by which the fishing gear is slid in. This roller will be driven by amotor, which is not shown in the drawings, and which will permit it toturn in both directions, thus facilitating both the setting out and thehauling in of the fishing tackle.

As we have indicated previously, the hoisting in of the gear can be doneby the lower deck, by the upper deck, or by the upper deck but looped tothe aft mast.

The hauling in on the lower deck would only be done in cases of badweather. Under normal conditions, the hauling in would be carried out onthe upper deck. For this manoeuver, the winches begin to pull the cables7 which slide over the deck and reach the stern through the tunnel 8which divides the working bridge in two halves 4. Inside this tunnel andat the exit to the stern, rollers have been provided 9 by means of whichthe cable will he slid and which, passing between the aft masts, slidesthrough the snatch blocks 10 of the davits 11 and 12, -FIG. 3-.

The net (not shown) has the customary doors (not shown) ahead of it forspreading the net during trawl- When the doors at the seaward end of thecables have reached the snatch blocks 10 a release bar (not shown) isinserted to attach the doors to the davit arms 11 and 12. This takes thestrain off of the doors so the cable may be detached from the doors andattached to the net. In the following manoeuver, the davits l1 and 12-FIG. 3- are swung on their vertical axes, each one towards on side ofthe boat, thus making it convenient to remove the doors so that they donot get in the way of pulling in the remaining tackle. The davitsrevolve on axes 24 and 25 driven by an electric or hydraulic motor whichis interlocked with an endless screw.

In continuation, a roller 6 -FlG. 1- is started, a roller which shouldpreferably be of rubber rotating clockwise as viewed in FIG. 1 or insuch direction as to cause pulling of the fishing gear (not shown)aboard the boat. After this, the winches 5 are started up so that thenets are brought in, passing over the roller 6 through the tunnel 8-FIG. 3- and another roller 26 -FIG. 1) until the fishing gear entersthe winch and continues to rise constantly until it reaches the maximumpoint where hewpqlestnst own) ttas a roller 26 .9

1-. At this point, 25 metres of gear have been taken in, even thoughonly a small boat may be involved in the operation; if the boat islarger, even more would have been hauled in, looping it at the height ofa roller 6 and through further cables it would continue to be pulled inby the winch drums 27 and 28 -FIG. 4-until the bottom of the net, thepart with the catch, is reached. If this is not too heavy, it willcontinue to be carried out. If, on the other hand, it holds a great dealof weight, it will be necessary to loop it and hoist it by the twoleggedmast by means of the main tackle which is in stalled in the crosstree 30-FIG. 3- and by means of the snatch blocks 16 -FIG. 1-.

As is known, these main tackles are made up of one snatch block in thecrosstree which has two rollers and another which has only one roller,where the weight is engaged; by means, due to the reduction, muchgreater force is obtained, since the reduction is 3 or 4 to 1, accordingto how it is wished to use the main tackle.

The operation is carried out in the following manner: the net bottom israised as much as possible by means of the roller 6. When it cannot beraised more because of the excessive weight, the gear is looped and itwill then be raised by means of the main tackle through a snatch block16 to this block. This action will be repeated as many times as may benecessary until the bottom of the net passes over the roller 6. Thehatch cover 23 -FIG. 3- is opened, allowing the fish to fall to the maindeck. This operation is performed when the fishing is done by trawlingor by single-boat net fishing.

If the fishing is performed by a pair of boats, the operation ofthrowing out the fishing gear is the same, but since each boat dragsonly a single cable, the hook for towing 31 -FIG. 1- is made fast, thecable coming out over the davits 11 and 12 so that when the fishing gearis being hauled along, either one of the boats is able to manoeuvrefreely. When the fishing gear is retrieved, one of the boats casts arope to the other by which the other arm of the fishing gear is passed.Since, as we have already described and as can be seen in FIG. 3, theentire side of the boat is completely free, the other arm of the gearcan be carried to the stem without any obstruction, in order to take itin, as we have described the operation previously, or as if the fishingwere being done by trawling or with only one boat. When the gear ishoisted onto the deck aft, aided by the rotating roller, it will bepassed through the previously mentioned tunnel 8 until it reaches theforward part of the boat at the height of the hatch covers. As can beseen, the length of gear that can be hoisted in at one time is muchgreater than that which can now be handled by the system of hauling inused by boats with ramps.

It can be seen in FIG. 3 that the tunnel 8 has doors both on the forwardside 13 and aft 14 so that, in the event that it should be necessary, aclosed area of some 30 metres of more can be created, with a variety ofuses. One of them, for example, is the straightening out and rearrangingof the fishing gear in the case of bad weather. By this means there willbe protection against the elements whereas, in other boats, similaroperations must be carried out in the open.

If due to bad weather or any other cause, it is wished to haul in thefishing gear by the lower deck, then it will be sufficient to pass thecables 7 by this deck, by means of the pulleys l5 and from themdirectlytq the roller 6. Usually this deck of about metres will be usedin handling the fish, for quick freezing chambers, filleting machinery,and, in general, for whatever type of machinery it is wished to include.Within this area it will remain thoroughly protected. The great numberof covered and fully sheltered metres of space protected from sea surgeand inclement weather should be noted.

If, as we have said previously, the passage of the fishing gear requireslooping it to the aft mast 22, the cable will be passed by a roller 9and from there to the snatch blocks 16, located at the height of thismast.

In any one of these three cases, the person who operates the winches 5will be able to see the operation directly. As we have said previously,these winches are located below the upper deck, but in such a way thatif the person operating them is standing, his shoulders remain at theheight of the upper deck 2.

If the operation of taking the net aboard is done by the upper deck,observation can be made flush with the deck and through the tunnel 8,and in the event of hauling in by means of the aft must, as can be seenin FIG. I, there is still a perfectly unobstructed line of sight fromthe location of the winches 5 over the command bridge, to the snatchblock 16 at the top of the twolegged aft mast 21, by which means it ispossible to have a perfect view of the net loop (when it arrives) at thepoint of maximum contact butted against the snatch block 16.

The positioning of the winches is within a cabin intended to protect theperson operating them. For this purpose, the area will be protectedbehind, the part corresponding to the bow, by a washplate 19 andoverhead by covers 20 which will protrude approximately one half metreabove the upper deck. In the wall of the cabin which leaves us orientedtoward the stern, doors 21 have been provided which fold down on thedeck as their hinges are located on the upper edge of the deck 2. Bythis means, these doors can be opened upwards and remain parallel tothis deck 2. When the weather is had, naturally these doors shouldremain closed; for this reason, they are provided with windows whichallow the required view.

The aft masts 22 are located at either side of the hatch cover 23 -FIG.3- and almost at the bridge, leaving the opening of this free.

The davits 11 and 12 are mounted on pivoting axes 24 and 25 which permitthem to revolve aft at a 270 angle, so that, swinging along the routeindicated by the arrowheaded dashed lines of FIG. 3, they come to restagainst the masts 22.

The application of this system allows fishing by trawling, by singleboat, or by pairs of boats, since on lowering the nets, the doors andthe cable (when it is a matter of trawling or single-boat fishing) isdone from the stern, in the same way as when the fishing is done inpairs of boats, and the other arm of the fishing gear is given to thecompanion boat by passing it over the side without difficulty.

The setting out of the fishing gear is done in the following manner: acable 7 which has the nets (not shown) hooked to it as well as the netdoors (not shown) is made to pass out from the winches over the upperdeck 2, sliding on rollers 26 then running aft along the upper deck andthrough the tunnel 8 by way of the rollers 9 until the davits arereached 11 and 12, even though the gear might be in the bow or thetunnel. By means of a turning mechanism (not shown) the cable is carriedto a roller 6 which is started up so that it drops the gear into thesea, the nets and doors passing out (if the. fishing is by trawling orsingle boat methods), the nets and cable if it is being done by pairs ofboats.

In the event that the gear is snagged below, the operation ofdisentangling is easily carried out. Since there is no obstruction alongthe sides of the boat, it is possible to carry one of the cables forwardbymeans of the rollers 32 and 33 -FIG. 3-; the operation can then becarried out from the bow, eliminating the danger of entangling the cablein the propeller, in the following manner: swinging the davit 12outward, one of the cables is caught from the stern by the snatch block-FIG. 1- and then carried by means of rollers 32 and 33 -FIG. 3- to thewinch 5. The cable, which was aft be fore, is now in snatch block .10over rollers 33, or, that is, in the bow. The boat may then positionitself behind the fishing gear which has been caught sidewise of theboat and extending from the sea bottom and can attempt to get the gearout over the bow.

FIG. 2 is a detail of the construction of the command bridge 3, in whichthe placement of a life boat between the fishing operations cabin andthe outside railing can be seen, and the free space that remains betweenthe railing and the boat. Naturally, this detail is not an essential oneand could be modified in any way.

FIG. 4 provides us with a view of themain deck where the placement ofthe winches and hatch covers is shown in more detail, as well as detailsof the location of the various compartments on this deck. In thisdrawing the amount of covered space which remains for work can beappreciated.

As for FIG. 5, which corresponds to the bulkhead deck with the holds, itshows us the arrangement of the holds with complementary details of themachine room, tanks for fuel and water storage, etc.

With the nature of the object of this application adequately described,it remains only to add that any kind of modification of form or detailcan be introduced which does not alter the essential characteristics.

What is claimed is:

1. A fishing boat comprising:

a. a hull having a bow and a stern, a lower main deck and an upper deckdefining an interspace, said decks extending substantially from said bowto said stern,

b. bridge means including transversely spaced apart side structuresextending above said upper deck and defining a tunnel between them whichextends generally fore and aft,

c. winch means in the interspace between said decks near the bow of saidboat,

d. at least one power driven reversible roller means at the sternrotatable about an axis that is transverse to the boat,

e. cable means coupled to and driven by said winch means, said cablemeans being extendable through alternate paths above and below saidupper deck and over said stern roller means to enable passing fishinggear to and from said boat over said roller means.

2. The boat set forth in claim 1 wherein:

a. said upper deck has an opening forward of said roller means,

b. guide roller means for directing one cable from over said rollermeans through said opening and under said upper deck in said interspace,whereby to permit fishing gear pulled in over said roller means to bedisposed fore and aft over a substantial part, of the length of saidlower deck.

3. The boat set forth in claim 2 wherein:

a. said upper-deck has a second opening near said winch means to providea clear line of sight from proximity with said winch means through saidtunnel to said stern and there being another clear line of sight towardsaid stern through said interspace and first opening.

4. The boat defined in claim 1 including:

a. selectively openable and closeable door means at the fore and aftends, respectively, of said tunnel to enable refining an enclosed spacetherein when said doors are closed.

5. The boat set forth in claim 1 wherein:

a. said bridge structure is located forward of said stern and aft ofmidship.

6. The boat set forth in claim 1 including:

a. a pair of transversely spaced apart davits at said stern above saidupper deck, said davits including arms which are swingable aboutnominally vertical axes,

b. a snatch block means having pulley means and being supported on eachdavit arm,

0. a set of roller means in said tunnel means and near the aft endthereof, and at least one more set of roller means substantially forwardthereof,

d. cable means in operative connection with said winch means andextending over said roller means sets to said snatch block means on saiddavit arms, respectively, said cable means ascending from said winchmeans to above said upper deck,

e. said upper deck having an opening generally above said winch means toenable a clear line of sight over said upper deck, through said tunneland to said davits.

7. The boat set forth in claim 6 including:

a. aft masts extending upwardly from said upper deck between saidtransverse roller means on said stern and the aft side of said bridgestructure,

b. pulley means at the upwardly remote ends of said aft masts forengaging said cable to thereby raise fishing gear attached thereto forlooping said gear on said upper deck while the operator of said winch isafforded a clear line of sight to said mast.

8. The boat set forth in claim 6 including:

a. means for shifting said cable sidewise of said boat and means toredirect said cable from near the bow of said boat, whereby said boatmay be propelled rearwardly without interference by said cable andfishing gear attached thereto in the event it is desired to reverse theboat for unsnagging the fishing gear.

9. A fishing boat comprising:

a. a hull having a bow and a stern, a lower deck and an upper deckdefining an interspace therewith,

said decks extending substantially from said bow to said stern, saidintcrspace and the space above said upper deck affording separate pathsfor running fishing gear handling cables along said boat between theforward and stem portions thereof,

b. reversibly power driven stern roller means for taking in and payingout fishing gear relative to said boat, said roller means beingrotatable on an axis transverse to said boat,

0. bridge means above said upper deck including transversely spacedapart supporting structures defining a tunnel above said upper deck,

(1. said upper deck having an aft opening near and forward of saidroller means and having another opening substantially forward and nearerthe bow of the boat,

e. winch means near said most forward opening,

f. cable means and means for selectively directing a cable from saidwinch means through said interspace and out of said aft opening to saidstern roller means and means for directing a cable through said tunnelto said stern roller means whereby to enable selectively laying fishinggear that is pulled in over said stern roller means on said upper deckor said lower deck.

10. The boat set forth in claim 9 wherein:

a. said winch means is located between said upper and lower decksforward of said more forward opening, whereby an operator positionednear said winch means is afforded clear lines of sight toward said sternthe first of which is through said interspace and the second of which isabove said upper deck and through said tunnel.

11. The boat set forth in claim 10 wherein:

a. said bridge means includes structures covering said supportingstructures and said tunnel is provided with fore and aft doors tothereby define a protective enclosure.

UNITED STATES PATENT OFFICE CERTIFICATE OF CORRECTION Patent No. 3,797,432 Dated March 19 1974 Inv n fls) Javier Rev Bermudez It is certifiedthat error'appears in the above-identified patent and that said LettersPatent are hereby corrected as shown below:

On the title page, change the spelling of the inventor's name from"Mermudlez', vtcv-Berm1:u:1ez--, both occurrences.

0n the titlepage change the inventors address from "Avda Primo de Rineo"to---Avda. Primo de Rivera-..

Signed and sealed this 30th da ofJuly 1974.

' (SEAL)- Attest: MCCOY M. GIBSON JR. 0. MARSHALL D ANN AttestingOfficer Commissioner of Patents FORM PO-IOSO (1049)

1. A fishing boat comprising: a. a hull having a bow and a stern, alower main deck and an upper deck defining an interspace, said decksextending substantially from said bow to said stern, b. bridge meansincluding transversely spaced apart side structures extending above saidupper deck and defining a tunnel between them which extends generallyfore and aft, c. winch means in the interspace between said decks nearthe bow of said boat, d. at least one power driven reversible rollermeans at the stern rotatable about an axis that is transverse to theboat, e. cable means coupled to and driven by said winch means, saidcable means being extendable through alternate paths abovE and belowsaid upper deck and over said stern roller means to enable passingfishing gear to and from said boat over said roller means.
 2. The boatset forth in claim 1 wherein: a. said upper deck has an opening forwardof said roller means, b. guide roller means for directing one cable fromover said roller means through said opening and under said upper deck insaid interspace, whereby to permit fishing gear pulled in over saidroller means to be disposed fore and aft over a substantial part of thelength of said lower deck.
 3. The boat set forth in claim 2 wherein: a.said upper deck has a second opening near said winch means to provide aclear line of sight from proximity with said winch means through saidtunnel to said stern and there being another clear line of sight towardsaid stern through said interspace and first opening.
 4. The boatdefined in claim 1 including: a. selectively openable and closeable doormeans at the fore and aft ends, respectively, of said tunnel to enablerefining an enclosed space therein when said doors are closed.
 5. Theboat set forth in claim 1 wherein: a. said bridge structure is locatedforward of said stern and aft of midship.
 6. The boat set forth in claim1 including: a. a pair of transversely spaced apart davits at said sternabove said upper deck, said davits including arms which are swingableabout nominally vertical axes, b. a snatch block means having pulleymeans and being supported on each davit arm, c. a set of roller means insaid tunnel means and near the aft end thereof, and at least one moreset of roller means substantially forward thereof, d. cable means inoperative connection with said winch means and extending over saidroller means sets to said snatch block means on said davit arms,respectively, said cable means ascending from said winch means to abovesaid upper deck, e. said upper deck having an opening generally abovesaid winch means to enable a clear line of sight over said upper deck,through said tunnel and to said davits.
 7. The boat set forth in claim 6including: a. aft masts extending upwardly from said upper deck betweensaid transverse roller means on said stern and the aft side of saidbridge structure, b. pulley means at the upwardly remote ends of saidaft masts for engaging said cable to thereby raise fishing gear attachedthereto for looping said gear on said upper deck while the operator ofsaid winch is afforded a clear line of sight to said mast.
 8. The boatset forth in claim 6 including: a. means for shifting said cablesidewise of said boat and means to redirect said cable from near the bowof said boat, whereby said boat may be propelled rearwardly withoutinterference by said cable and fishing gear attached thereto in theevent it is desired to reverse the boat for unsnagging the fishing gear.9. A fishing boat comprising: a. a hull having a bow and a stern, alower deck and an upper deck defining an interspace therewith, saiddecks extending substantially from said bow to said stern, saidinterspace and the space above said upper deck affording separate pathsfor running fishing gear handling cables along said boat between theforward and stern portions thereof, b. reversibly power driven sternroller means for taking in and paying out fishing gear relative to saidboat, said roller means being rotatable on an axis transverse to saidboat, c. bridge means above said upper deck including transverselyspaced apart supporting structures defining a tunnel above said upperdeck, d. said upper deck having an aft opening near and forward of saidroller means and having another opening substantially forward and nearerthe bow of the boat, e. winch means near said most forward opening, f.cable means and means for selectively directing a cable from said winchmeans through said interspace and out of said aft opening to said sternroller means and means for directing a cablE through said tunnel to saidstern roller means whereby to enable selectively laying fishing gearthat is pulled in over said stern roller means on said upper deck orsaid lower deck.
 10. The boat set forth in claim 9 wherein: a. saidwinch means is located between said upper and lower decks forward ofsaid more forward opening, whereby an operator positioned near saidwinch means is afforded clear lines of sight toward said stern the firstof which is through said interspace and the second of which is abovesaid upper deck and through said tunnel.
 11. The boat set forth in claim10 wherein: a. said bridge means includes structures covering saidsupporting structures and said tunnel is provided with fore and aftdoors to thereby define a protective enclosure.